Self-loading scraper.



H. McK. CONNER.

SELF LOADING SCRAPER.

APPLICATION FlLED-0CT.l9, 191B.

Patented Dec. 30, 1919.

2 SHEETS-SHEET I.

a @Mentoz H. McK. (BONNER.

SELF LOADING SCRAPER.

APPLICATION murom. 19. 1913.

Patented Dec. 30, 1919.

2 SHEETS-SHEET 2.

Win/6mm) wow 011d UNITED STATES PATENT, OFFICE.

HARRY.MOKEAN CONNER, OEELSCRAN'I'ON,PENNSYLVANIA.

SELF-LOADING sonarnn.

To all whom it may concern:

Be it known that I, HARRY McKnAN Com NER, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented certain new and useful Improvements in Self-Loading Scrapers, of which the following is a specification.

In mining coal occurring in low seamsor in thin and poor quality beds, a scraper has been employed for bringing the coal from the face to the gangway or loading road,

\ The invention aims to 'provide a scraper wh1ch is self loading and self discharging,

loading as it is drawn rearwardly through the loose material and dischargingwhen it reaches the predetermined point in its forward movement for delivery. .The invention provides a scraper ing into the/scraper during its rearward -mov ement, and which automatically closes to retain the load .when a pull is exerted todraw the scraper forward and the load confined thereby.

a as claimed hereinafter.-

Referring to theaccompanying drawings,

Figure l is a top plan view of a scraper embodying the invention.

Fig. 2 is a side elevation, the full lines showing the relation of the parts when the scraper is open to receive a load and the dotted lines showing the disposition of the parts when the scraper is closed to confine theload.

Fig. 3 is a front view of the scraper showing the position of the parts when the same is closed.

Fig. 4 is a transverse section on the l ne H of Fig. 2, looking to the rear showing the relation of the I which opens automatically to receive the load when drawn rearwardly, the material pass- Specification of Letters Patent. Patented Dec. 30, 1919. Application filed October 19, 1918. -Serial Ito. 258,825.

parts when the scraper is opened.

Corresponding and like parts are referred to in the fOllOWiIlg description and indicated 1n the several viewsof the drawing by like reference characters. i l

The body of the scraper may be of any construction and relative size and, as illustrated, comprises side walls 1 and a rear. closure 2 which is preferably hinged at itsv lower end abput in the plane of the bottom or lower edges of the side walls 1, as indicated. A. bracket or casting 3 is secured to the closure or door 2 and a bar 4: is pivotally connected at one end to the bracket 3 by means of a fastening 7 and its opposite end is pivoted at 13 to an arm 8 which in turn is pivoted at its lower end to a bracket 9 by means of a fastening 11. The side walls 1 may be connected in any manner and, as illustrated, a plurality of transverse bars are employed, the same being indicated at 10, 19, 20, 21 and 22. While it is preferred to have the body open at its front, top and bottom it is observed that any one or all of the sides may be closed if preferred. Parallel strips 18 are secured at their ends to the transverse bars 19 and 20 and are spaced apart a distance to receive the upper end of the arm 8- and'prevent lateral displacement thereof. The bracket 9 is shown attached to the lower transverse bar 10. x

The upper or swinging end of the door or closure 2, is beveled to readily" penetrate the loose material when the scraper is passing therethrough in its rearward movement.

The door 2 may be hinged to the body of ,1 the invention the door 2 may be hinged in any manner to the body of the scraper so as to swing rearwardly and downwardly into open position and to close by an up ward and forward swinging movement.

A- tail rope, or cable 15 is connected to the arm 8 in any manner, a link 14: being shown andconnected to the arm 8 by the same fastening means 13 pivota lly connect- Milli ing the bar 4: to the arm 8. A pull m e, or cable 27 is connected to the arm 8'. T e ropes or cables 15 and 27 are to be operated in anymanner. A pull on the tail rope 15 draws the scraperrearwardly and eflects an opening and aloading thereof. A pull on the rope or cable 27 efiects a closing of the scraper to confine the load and a drawing of the scraper forwardly "over the bottom of the mine to deliver the load to the required point of dischar e. The arm 8 has a limited movement whlch is restricted by the transverse bars 19 and 20.

To prevent the rear end of the door 2 digging into'the bottom of the passage or drift it is preferred to provide means for holding such rear end slightly elevated, as indicated by the dotted lines a in Fig. 2. This is accomplished by means of a stop 25 which is mounted upon the transverse bar 20 and normally held in elevated position by means of a spring 24. The stop 25 is'secured to a stem 29 which is mounted in the trans verse bar 20 and projects upwardly therefrom and receives a trip 23 at its upper end. I When the stop 25-is'elevated'it engages the upper end of the arm 8 thereby holding the rear end of the door 2 slightly elevated as indicated by the dotted lines a. When the stop 25 is depressed the upper. end of the arm 8 moves rearwardly a distance to permit the rear end of the door 2 to occupy the position indicated in full lines in Fig. 2.

' The stop 25 may be depressed by the trip 23 coming in contact with a stop26 which may be located at any convenient point. The stop 26 is adapted to be placed in the path of the trip 23 and the latter is beveled so as to ride onthe stop 26 and depress the stop 25. As indicated most clearly in Fig. 2 the stop 25 is of U shape so as to embrace the front and rear edges and the lower side of the transverse bar 20.

Figs. 2 and 4 indicate the trip 23 mounted on the scraper so as to move therewith. The stop 26 is located in the drift or passage and is disposed a short distance in the rear ofthe material to be taken up by the scraper. While the scraper is traveling from the pointof discharge to the point of loading,

y the rear portion of the door 2 is held elevated so as not to dig into the bottom or floor of the passage. However, when the scraper reaches the point of loading, the trip 23 engages and rides beneath the stop 26,-.thereby permitting the rear portion of the door 2 to drop so as to pass beneath the load. The stop 26 is of a length to hold the trip 23 depressed until the door 2 is sufli ciently loaded to prevent its rising by the action of the spring 24. tending to elevate the trip 23 after the same has cleared the stop 26. d It is to be understood that the stop 26 may be advanced as the material is removed by the scraper in the discharge thereea set of. Obviously the length of the stop 26 may vary but will be such as to hold the trip 23 depressed until the door 2 has received a sufficient load to prevent its assuming the dotted line position, indicated in Fig. 2.

When the scraper is drawn rearwardly by means of the tail rope, or cable 15 the upper end of the arm 8 is moved rearwardly thereby lowering the door' 2 into approximately horizontal position.- Asthe scraper moves rearwardly it passesthrough the loose material, the latter passing over the door 2 and between the side walls l, thereby automatically loading the scraper. After the scraper has been drawn rearwardly a suflicient distance to insureits receiving a proper load, the pull on the tail rope 15 is released and the rope 27 is drawn upon to pull the scraper forward to the point of dischare' The initial pullon the rope or cable 27 roc s the arm 8 and efiects a closing of the door 2 which is moved into an upright position thereby confining the load. scraper has advanced t6 the loading road or point of discharge the load automatically When the discharges by reason of the bottomless formation of the scraper: Tofp'revent. the

scraper from riding upward .uponthe' ma-' terial the sidewall 1 have inner extensions 28 at their lower e ges which ride under the material and hold the scraper'on the bottom of the drift or passage. It will be understood that the scraper is'self loading and self discharging, the opening of thes'crape'r being efiected by the initial pull on the tail rope and the closing of the scraper being effected by the initial" pull on the forward drag rope or cable.

The foregoing dGSCIlPtlOItRIld. the drawings have reference'to what may be considered the preferred, or approved, form of my invention. lit is to be understood that I may make such changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within the scope of the appended claims.

Having thus fully described my invention, what ll claim as new and desire to secure by Letters Patent is 1. In a scraper of the character set forth, a body, a closurehinged at its lower end to the body, a pivoted operating member, connecting means between the operating member and closur tail and pull ropes connected with t e operating member, and

a movable stop adapted to limit the rearwar movement of the operating member to hold the closure properly elevated at its rear end when in lower position to prevent its digging into the bottom of the mine.

. 2. In a. scraper of the character set forth, a body, a closure hinged at its lower end to the body, a pivoted operating member, connecting means between the operating neeegsau 8 member and closure, tail and pull ropes conto automatically trip the same at a predenected Wltll the operating member, and a termined point.- r 10 movable stop adapted to limit the rearward In testimony whereof I aflix-my signature movement of the operating member to hold in presence of two Witnesses.

the closure properly elevated at its rear end RY MOKEAN CONNER. when in lower position to prevent its dig- Witnesses: ging into the bottom of the mine,' and e THOMAS G. JAY,

stop disposed in the path of the movable stop A. G. CURTIN. 

